19005841540 has 48 divisors (see below), whose sum is σ = 45657368064. Its totient is φ = 6510096000.

The previous prime is 19005841501. The next prime is 19005841573. The reversal of 19005841540 is 4514850091.

It is a super-2 number, since 2×19005841540² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19005841540.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84565 + ... + 212515.

It is an arithmetic number, because the mean of its divisors is an integer number (951195168).

Almost surely, 2^19005841540 is an apocalyptic number.

19005841540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19005841540 is an abundant number, since it is smaller than the sum of its proper divisors (26651526524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19005841540 is a wasteful number, since it uses less digits than its factorization.

19005841540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129028 (or 129026 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 37.

The spelling of 19005841540 in words is "nineteen billion, five million, eight hundred forty-one thousand, five hundred forty".